Measurement of $CP$ Violation in $B^0to psi(toell^+ell^-)K^0_mathrm{S}(to pi^+pi^-)$ Decays
The origin of high-energy cosmic rays, atomic nuclei that continuously impact Earth’s atmosphere, is unknown. Because of deflection by interstellar magnetic fields, cosmic rays produced within the Milky Way arrive at Earth from random directions. However, cosmic rays interact with matter near their sources and during propagation, which produces high-energy neutrinos. We searched for neutrino emission using machine learning techniques applied to 10 years of data from the IceCube Neutrino Observatory. By comparing diffuse emission models to a background-only hypothesis, we identified neutrino emission from the Galactic plane at the 4.5σ level of significance. The signal is consistent with diffuse emission of neutrinos from the Milky Way but could also arise from a population of unresolved point sources.
- Published in:
Physical Review Letters - Type:
Article - Authors:
Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinen, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Afsharnia, H.; Agapopoulou, C.; ...; Zunica, G. - Year:
2024
Citation information
Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinen, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Afsharnia, H.; Agapopoulou, C.; ...; Zunica, G.: Measurement of $CP$ Violation in $B^0to psi(toell^+ell^-)K^0_mathrm{S}(to pi^+pi^-)$ Decays, Physical Review Letters, 2024, 132, 021801, January, American Physical Society, https://link.aps.org/doi/10.1103/PhysRevLett.132.021801, Aaij.etal.2024a,
@Article{Aaij.etal.2024a,
author={Aaij, R.; Abdelmotteleb, A. S. W.; Abellan Beteta, C.; Abudinen, F.; Ackernley, T.; Adeva, B.; Adinolfi, M.; Adlarson, P.; Afsharnia, H.; Agapopoulou, C.; ...; Zunica, G.},
title={Measurement of $CP$ Violation in $B^0to psi(toell^+ell^-)K^0_mathrm{S}(to pi^+pi^-)$ Decays},
journal={Physical Review Letters},
volume={132},
pages={021801},
month={January},
publisher={American Physical Society},
url={https://link.aps.org/doi/10.1103/PhysRevLett.132.021801},
year={2024},
abstract={The origin of high-energy cosmic rays, atomic nuclei that continuously impact Earth’s atmosphere, is unknown. Because of deflection by interstellar magnetic fields, cosmic rays produced within the Milky Way arrive at Earth from random directions. However, cosmic rays interact with matter near their sources and during propagation, which produces high-energy neutrinos. We searched for neutrino...}}
